Changes in the cerebral blood flow in newborn rats assessed by LSCI and DOCT before and after the hemorrhagic stroke

Semyachkina-Glushkovskaya, O.; Лычагов, В. В.; Abdurashitov, Arkady S.; Sindeeva, Olga A.; Sindeev, Sergey S.; Zinchenko, Ekaterina; Kajbeleva, E. I.; Pavlov, Alexey N.; Kassim, M.; Tuchin, Valery V.

doi:10.1117/12.2078170

Cited by 2 publications

(1 citation statement)

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“…LSCI experimental data allowed us to understand that accumulation of extensive blood in venous network is a crucial factor for stress-induced critical changes in cerebral vessels related to intracranial hemorrhages. [23][24][25] With LSCI, we also found that the cerebral veins are more sensitive to adrenergic stimulation under normal state and during stress. Full-¯eld imaging of cerebral vessels in rats represents an important new insight in our understanding how the brain responds to stress: after stress-induced intracranial hemorrhages, rats demonstrate a typical venous relaxation due to activation of a special type of vascular receptors \anarchists" that are stimulated by adrenalinethe main hormone of stress but not nervous system.…”

Section: Introductionmentioning

confidence: 56%

Characterization of cerebral blood flow dynamics with multiscale entropy

Павлов

Abdurashitov

Pavlova

et al. 2017

J. Innov. Opt. Health Sci.

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Based on the laser speckle contrast imaging (LSCI) and the multiscale entropy (MSE), we study in this work the blood°ow dynamics at the levels of cerebral veins and the surrounding network of microcerebral vessels. We discuss how the phenylephrine-related acute peripheral hypertension is re°ected in the cerebral circulation and show that the observed changes are scale-dependent, and they are signi¯cantly more pronounced in microcerebral vessels, while the macrocerebral dynamics does not demonstrate authentic inter-group distinctions. We also consider the permeability of blood-brain barrier (BBB) and study its opening caused by sound exposure. We show that alterations associated with the BBB opening can be revealed by the analysis of blood°ow at the level of macrocerebral vessels.

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Section: Introductionmentioning

confidence: 56%